UV Index for Harlingen, TX

Current Harlingen UV Index

8.1 (Very High)

Last Updated 45 minutes ago

Hourly Harlingen UV Index

The hourly Harlingen, TX UV Index forecast for Thursday, September 18th, 2025.

5 Day Hourly Harlingen UV Index Forecast

Last Updated 23 hours ago

The UV index forecast for the next five days in Harlingen, TX has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Harlingen over the next five days will be 10.2 on Friday, September 19th at 2:00 pm.

The UV index forecast for Thursday, September 18th in Harlingen, TX is below.

Time UV Index Risk
1pm 8.6
Very High
2pm 4.5
Moderate
3pm 2
Low
4pm 2.1
Low
5pm 0.8
Low
6pm 0.4
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, September 19th in Harlingen, TX is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 1
Low
10am 2.9
Low
11am 5.7
Moderate
12pm 8.4
Very High
1pm 10.1
Very High
2pm 10.2
Very High
3pm 7.7
High
4pm 1.7
Low
5pm 0.8
Low
6pm 0.4
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, September 20th in Harlingen, TX is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.2
Low
9am 1
Low
10am 2.9
Low
11am 5.6
Moderate
12pm 8.4
Very High
1pm 10.1
Very High
2pm 9.4
Very High
3pm 3.4
Moderate
4pm 1.4
Low
5pm 0.8
Low
6pm 0.4
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, September 21st in Harlingen, TX is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low